>>13019971Easy, life exists in at least one planet.
We found so far about 4,375 exoplanets.
>https://exoplanetarchive.ipac.caltech.edu/There could be as many as 300 million potentially habitable planets in our galaxy.
We're not sure what mechanisms available for abiogenesis anyways, otherwise it would be a proven fact.
Let's work with what we know then. As far as we know, 1/4,375 planets has life in it.
That is 0.000228571428571, and so just multiply that by those 300 million potential planets in our galaxy, which is one of 2 trillion estimated.
There are possibly 68,571 planets with potential life in our galaxy.
What are the chances those are as smart as us or smarter is a completely different question.
When you consider that evolution takes the path of least resistance to fit in the natural environment, it puts even a bigger asterisk on evolving a big brain.
A species will need to be pressured to develop bigger brains. Nothing will consciously guide a species to evolve a bigger brain. A bigger brain is a generalist path, and when you consider the environments humans lived in, and how spread we are through different environments, it makes sense why we needed a generalist trait like being intelligent. Teamwork was not enough.
However, we aren't even sure what triggered our brains to evolve fast and big like for the past 2 million years. Some say we are still under natural pressure to grow our brain size.
